package com.lexiang.swagger;


import com.lexiang.swagger.properties.SwaggerProperties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import javax.annotation.Resource;

@Configuration
@EnableSwagger2
@EnableConfigurationProperties(SwaggerProperties.class)
public class Swagger2AutoConfiguration {

    @Autowired
    private SwaggerProperties swaggerProperties;

    /**
     * 创建API应用
     * apiInfo() 增加API相关信息
     * 通过select()函数返回一个ApiSelectorBuilder实例,用来控制哪些接口暴露给Swagger来展现，
     * 本例采用指定扫描的包路径来定义指定要建立API的目录。
     *
     * @return
     */
    @Bean
    @ConditionalOnProperty(prefix = "swagger", name = "type", havingValue = "zuul")
    public Docket createRestApiByZuul() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo());
    }


    @Bean
    @ConditionalOnProperty(prefix = "swagger", name = "type", havingValue = "service")
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())

                .select()
                .apis(RequestHandlerSelectors.basePackage(swaggerProperties.getPackages()))
                .paths(PathSelectors.any())
                .build();
    }

    /**
     * 创建该API的基本信息（这些基本信息会展现在文档页面中）
     * 访问地址：http://项目实际地址/swagger-ui.html
     * @return
     */
    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title(swaggerProperties.getApiTittle())
                .description(swaggerProperties.getApiDes())
                .termsOfServiceUrl(swaggerProperties.getServiceUrl())
                .contact(swaggerProperties.getWriterName())
                .version(swaggerProperties.getVersion())
                .build();
    }
}
